Quarterly report pursuant to Section 13 or 15(d)

Our Portfolio - Real Estate, Additional Information (Details)

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Our Portfolio - Real Estate, Additional Information (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2017
USD ($)
a
project
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Investment [Line Items]      
Area of land purchased (in acres) | a 4,000    
Number of solar projects | project 20    
Cost to acquire other real estate $ 145,000    
Portfolio cost   $ 23,178 $ 142,952
Lease Intangibles [Member]      
Investment [Line Items]      
Portfolio cost $ 56,000    
Joint Venture [Member]      
Investment [Line Items]      
Area of land purchased (in acres) | a 1,100    
Real Estate Portfolio [Member]      
Investment [Line Items]      
Real estate portfolio acquired value through equity interest in joint venture $ 21,000